Merge PR #31763 into master

* refs/pull/31763/head:
	test: auto-upgrade subvolume test
	mgr/volumes: tie everything together to implement versioned subvolumes
	mgr/volumes: provide subvolume create/remove/open APIs
	mgr/volumes: implement subvolume based on subvolume template
	mgr/volumes: implement subvolume group based on group template
	mgr/volumes: implement trash as a subvolume group
	mgr/volumes: snapshot util module
	mgr/volumes: template for implementing groups and subvolumes
	mgr/volumes: implement filesystem volume module
	mgr/volumes: lock module to serialize volume operations
	mgr/volumes: introduce volume specification module
	mgr/volumes: add fs_util helper module

Reviewed-by: Ramana Raja <rraja@redhat.com>
Reviewed-by: Patrick Donnelly <pdonnell@redhat.com>